Samuel e



` (No Model.)

s. E. NUTTING.

PENCIL SHARPBNER. No. 354,304. Patented Deo. 21, 1886.

UNITED STATES PATENT vEEiCE'..

sAMUEL E. NUTTING, CE CHiCAGo, iLLiNois, AssieNoE or rHEEEEoUETHs rro rrHoMAs CHAELEs, or sAME PLACE.

PENCIL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 354,804, dated DecemberZl, 1886.

Application flied March 24, isst.

To. all whom it may concern:

Be it known that I, SAMUEL E. NUTTING, of the city of Chicago, county of Cook, and State of Illinois, have invented new and useful Improvements in Pencil-Sharpeners, of which the following is a full and complete description, reference being had to the accompanying drawings.

My invention relates to mechanism for rapf Io idly sharpening lead 0r slate pencils, in which 2o structure, of which the lower portions, A,form

the sides of aniuclosure,which,with a drawer,

A?, that can be conveniently slid in or withl drawn from said inclosure, inserted, forms a receptacle for the purpose of catching and re- 2 5 moving the dust produced by the process o f sharpening. H is a transverse plate securing the sides together.

A3 represent iianges provided with screwholes for the purpose lof firmly securingfthe 3Q structure in position.

Near the upper ends of the supports A is a shaft, a, Fig. 3, which has suitable journalbearings in said supports, and is provi-ded with a crank, a.

On one side of the structure, and secured on -shaft a, is a bevel-gear, a2. Opposite gear a2, and secured on shaft c, is a metallic disk, a3, cut or furrowed radially, as shown in Fig. 2, whereby it operates as a le, as hereinafter set forth.

A rigid plate, A, extends horizontally from one of the supports, A', on which it is secured in an adjustable manner by means of slots and set-screws c5 and c. To the angular outer end of plate at is secured a flexible plate or spring, a'. The latter in turn supports a rotatable chuck, B. Said flexible plate c7 has attached to it a sleeve, d, in which said chuck has its bearing.

On the inner end of chuck B is secured a pinserial N0. 196,393. (No model.)

ion, D, gearing with wheel a2. As shown in Fig. 3, B represents a pencil. The construction of the parts is such that the pencil may be Y inserted centrally through the chuck, which is is threaded and adapted to be inserted therein.

-At the end of part c is shown a milled piece,

c, for convenience in tightening up or withdrawing said part c. In the bore of said tubes c and c', and fitting said bore, is placed a iiexi- 7o ble tube, c, (shown in Fig. 2,) which in the present example is rubber. .The object of said rubber tube is to provide for adapting the bore to varying sizes of pencils. To readily admit of the insertion of a blunt pencil into tube c, the outer end thereof isslitted at several places in its circumference, whereby greater expansion is permitted. When pencil B is inserted in a position to bring its end properly against the file, part c is screwed in, thus compress- 8o ing tube c3 and causing its slitted end to enter a contraction in the bore of part c', thereby iirmlyclaspingsaidpencil. An oppositemovement of the parts readily admits of the withdrawal of the pencil.

To limit the lateral movement of the chuck as acted upon by spring-plate ci, a projection from plate a* is provided, and a set-screw, d', inserted therein in such manner as to act as a stop for said chuck. By this means the'taper 9o of the sharpened ends of the pencils'may be made uniform or changed at pleasure.

The operation of the sharpener is as follows:

By means of the crank a theshaftais rotated, carrying with it wheel a and file-disk ci. By 95 means of pinion D, which is geared with wheel a2, rotary motion is transmitted to the chuck, carrying with it pencil B. .The latter moves in a direction opposite to that of disk 0,3, thus causing an abrasion that rapidly reduces the roo end of said pencil. Athin covering,e,of metal or other suitable material, is secured at e beneath the wheel and disk, as shown in Fig. 2, and is curved upward and around in an oppo site direction to theintended movement of said wheel and disk to a point, e2, where it terminates, thus leaving space from that point downward to permit observation of the operation of sharpening. Covering eincloses the spacebetween wheel a? and disk aa'throughout its scope, and thus aids in preventing the'escape of dust. An advantageous feature of the rotary circular lc lies in the fact that when the pencil is brought in contact therewith, as shown in the present example-that is, on a radial line with the end of said pencil near the axis of the ile-the movement at this point is-much less rapid than nearer the periphery, and consequently admits of a reduction of said pencil to a very pointed tip without danger'of breaking in the operation.

Having thus fully described my said invenpose described. Y

tion, what I claim, and desire to secure by Letters Patent, is

1. In a pencil-Sharpener, the combination'of 25 c', which latter are supplemented by the iexible tube c3, and the whole attached to the other por tions of the structure, so as to admit of lateral play by means of the flexible plate a7 or its equivalent, substantially as and for the pur- SAMUEL E. NUTTING. Vitnesses:

A. L. FLANINGHAM,

Trios. CHARLES. 

